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A. F. onosMAN, 0F rSTEAMER lossirnr, UNITED'STATES NAVY.. Lettere Paten; ne. 72,268, .1aed December 17, 18er.

IMPROVEMENT IN `BDAT-LGWERIM APPARATUS.

TO ALL WHOM IT MAY CONGERN:

Be it known that I, A. F. CROSMAN, of the stoamerOssipee, North Pacific Squadron, United States Navy, have invented a newfand improved Ident-Lowering Apparatus; and that the following description, taken in' connection with the accompanying drawing, hereinafter 4referred to, forms a. full and exact specication of the same, wherein I have set `forth the nature and principles of my said improvements, byvwhich my invention may be distinguished from allothers of a similar class, together with such partsas I claim and desire to have secured v td me'by Letters Patent.

This invention relates to a new and improved Vm-eans for detaehing bouts fromy davits.

The accompanying drawing represents a front section-al `vien .of a vessel having my improvement applied to it. v

A represents a vessel, to the sides of which horizontal brackets Bv are irinlysecured, and in which the lower ends of uprights C are attached, said uprights being fixed or rigid. To the rear or inner side' of each upright there is attached a vertical' tube, D,'and in the nprights C, just above the tubes yD, there are fitted pulleys a, over which chains b pass, said chains extending down within the tubes D, and having weights c attached. To the outer-ends of' the brackets B the lower ends of the davits E are attached, by joints d, the v davits extending down a. triile below the joints, und having springs FX bearmg against them, which springs have a tendency to keep the davits in an upright position? The weighted chains b, which are also attached to the davits, have the same tendency. The davits E have the usual tackle F applied to them, and to the rear side of each upright C there is attached a catch Gr, and these catches have a tendency to engage with the'chains b, by means ot springs c, and hold the davits'E further in` or out from the side of the vessel, as maybe required. The catches Gr have cords f attached to them, so that the operator, in Iloweringtheboat, may actuate the catches and admit ofthe davits E,`extending' or projecting outward from the side ofthe vessel as far as circumstances may require. In hoisting the boat, the davits may he made to move inward as far as desired, by freeing the c'zhl'iins-b from the catches G, the pull on the davit-tacklcs, inraisng theboat, having a tendency to draw the davits upward, and therefore assist the springs FX and weights and chains c b in effecting that result.

Having thus described my invention, I claim as new, and desireto secure by Letters Patent- Th'e notched spring-catch G, in combination with the weighted-chains and jointed-davits E, ns herein described, for the purpose specified. i

The above specification of my invention signed by me, this eleventh day of June, 1867, at Panama.

4 A; F. cRosMAN. Witnesses:

E. D. Renna, FREDK HICKS. 

